Hidden charm pentaquark states in a diquark model

The mass spectrum of hidden charm pentaquark states composed two diquarks and an antiquark are calculated by use effective Hamiltonian which includes explicitly the spin, color, flavor dependent interactions. results show that $$P_c(4312)^+$$ $$P_c(4440)^+$$ could be explained as with isospin spin-parity $$IJ^P=1/2\left( 3/2^-\right) $$ , $$P_c(4457)^+$$ state a 5/2^-\right) $$P_{cs}(4459)^+$$ $$IJ^P=0\left( 1/2^-\right) or $$0\left( . Predications for masses other possible also given, decay channels these discussed.